Like I need another hobby… Found one of these the other day while Geocaching and, thinking it was the cache, tried to open it. I was unsuccessful opening it because I could feel the can crushing under the tape. I posted my result on Geocaching.com and the owner of the camera (also a geocacher) explained to me what I found. He did not realize a cache had been placed near his camera (5-feet away, what are the odds?). I’ve seen pinhole cameras before but never imagined setting one up to record the sun crossing the sky for 6-months!
Although the images are not typical of what you expect to see from a camera I think they are really interesting.